mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

s390x/misc_helper.c: wrap s390_virtio_hypercall in BQL

Browse Source 
s390_virtio_hypercall can trigger IO events and interrupts, most notably
when using virtio-ccw devices.

Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Fixes: 278f5e98c6 ("s390x/misc_helper.c: wrap IO instructions in BQL")
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Aurelien Jarno 2017-04-24 00:32:40 +02:00 committed by Alexander Graf
parent 601b9a9008
commit 2cf9953bee
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
target/s390x/misc_helper.c
View File

@ -288,7 +288,9 @@ void HELPER(diag)(CPUS390XState *env, uint32_t r1, uint32_t r3, uint32_t num)
switch (num) {
case 0x500:
/* KVM hypercall */
qemu_mutex_lock_iothread();
r = s390_virtio_hypercall(env);
qemu_mutex_unlock_iothread();
break;
case 0x44:
/* yield */